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參數(shù)資料
| 型號： | MB86434 |
| 廠商： | Fujitsu Limited |
| 英文描述： | 5V Single Power Supply Audio Interface Unit (AIU) |
| 中文描述： | 5V單電源供電音頻接口單元（美亞） |
| 文件頁數(shù)： | 22/38頁 |
| 文件大小： | 574K |
| 代理商： | MB86434 |
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MB86434
22
4. Receiver Connections
It is possible to add tones and adjust sidetones by using amp 1,2 and 3 and the electronic volume control. When
using amp 3, however, it is necessary to include HPF to avoid interference from the speaker amp DC.
Tone and Sidetone Addition by Inclusion of Secondary LPF and Primary HPF.
Amp1, Amp2 not used
–
+
SGC
(inside IC)
–
+
–
+
SGC
SGC
SGC
R
1
C
1
R
2
C
2
R
3
R
4
R
5
C
3
R
6
R
7
C
4
R
8
C
5
R
9
C
6
IMTON
TONEO
(tone)
BBO (sidetone)
PTBO
(receiving)
IM1
OP1
IM2
OP2
AMP2
AMP1
BTO
IM3
BBI
AMP3
EV2
OP1
Secondary LPF
A = –R
2
/R
3
ω
/Q = 1/C
2
* (1/R
1
+1/R
2
+1/R
3
)
ω
2 = 1/ (R
1
R
3
C
1
C
2
)
Signal addition
R
4
=
R
5
= R
6
= R
7
= 100 k
C
3
= C
4
= 0.1
μ
F
Primary HPF
A = –R
9
/R
8
f c = 1/(2
π
C
5
R
8
)
C
6
= 0.1
μ
F
The following settings are
necessary to comply with CCITT
Recommendation
R
8
=
R
9
= 100 k
C
5
= 0.039
μ
F
C
3
+
(inside IC)
SGC
IM1
OP1
AMP1
+
(inside IC)
SGC
IM2
OP2
AMP2
BTO
open
EV2
Note: When amps are not used, the amp input and output should be shorted together.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MB86434PF | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:5V Single Power Supply Audio Interface Unit (AIU) |
| MB86435 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:3 V Single Power Supply Audio Interface Unit (AIU) |
| MB86435PFV | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:3 V Single Power Supply Audio Interface Unit (AIU) |
| MB86437 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:3 V Single Power Supply Audio Interface Unit (AIU) |
| MB86437PFV | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:3 V Single Power Supply Audio Interface Unit (AIU) |
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